Safety valve exhaust silencing device

Abstract

The invention discloses a safety valve exhaust silencing device. An expansion silencing unit is installed on an exhaust port of a safety valve, the expansion silencing unit at least comprises an expansion flow division body and a ventilation silencer connected with the expansion flow division body; and the expansion flow division body comprises a flange used for being connected with an exhaust port, and a horn-shaped flow division body connected with the flange, and the horn-shaped flow division body is internally provided with guide plates in the air flow direction. According to the safety valve exhaust silencing device, due to the arrangement of the expansion silencing unit, the horn-shaped flow division body firstly expands the air flow released by the extreme speed, the requirement forpressure relief is met, the guide plates are arranged in the expansion silencing unit to enable the air flow to enter a ventilation silencer in order, through the arrangement of the ventilation silencer with the certain length and a silencing grating, the noise discharged outside is reduced to a standard value, and the whistle which disturbs residents is not generated.

Description

technical field [0001] The invention relates to a noise reduction device, in particular to a safety valve exhaust noise reduction device. Background technique [0002] When the internal gas pressure reaches a certain value, the safety valve needs to discharge the gas to reduce the pressure and ensure safety; the structure of the safety valve causes the extremely high noise level due to the extremely fast direction change of the valve body during the gas discharge process , and the propagation distance of the noise is very long, which affects the surrounding residents. [0003] The prior art has provided several main solutions for solving this problem, such as being connected with an inner exhaust pipe at the exhaust port of the safety valve, a plurality of exhaust holes are arranged on the inner exhaust pipe, and the inner exhaust pipe The outer exhaust pipe is added outside, and multiple exhaust holes are set on the outer exhaust pipe. Although this method has a certain no...

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Problems solved by technology

[0003] The prior art has provided several main solutions for solving this problem, such as being connected with an inner exhaust pipe at the exhaust port of the safety valve, a plurality of exhaust holes are arranged on the inner exhaust pipe, and the inner exhaust pipe The outer exhaust pipe is added outside, and multiple exhaust holes are set on the outer exhaust pipe. Although this method has a certain noise reduction effect, the noise is still very loud due to the high air pressure.

If a muffler cover is installed outside the safety valve, it will lead to poor exhaust and potential safety hazards

To solve the noise problem of the safety valve without affecting the normal operation of the safety valve, the existing technology does not solve these problems well

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